In 2001, a burly anchorage longshoreman named Scott Heyworth turned up in the nearby town of Wasilla for a meeting with its mayor, Sarah Palin. Heyworth, a local Democratic activist, had grown tired of waiting for the Big Three oil companies to tap their huge natural-gas reserves in the state’s North Slope, the long swatch of northern Alaska tundra that includes the largest oil and gas fields in North America
